linux-kernel - Re: PROPOSAL: extend pipe() to support NULL argument.

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Message-ID: <20090702094620.GE6372@cr0.nay.redhat.com>
Date:	Thu, 2 Jul 2009 17:46:20 +0800
From:	Amerigo Wang <xiyou.wangcong@...il.com>
To:	Changli Gao <xiaosuo@...il.com>
Cc:	Amerigo Wang <xiyou.wangcong@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: PROPOSAL: extend pipe() to support NULL argument.

On Thu, Jul 02, 2009 at 05:18:49PM +0800, Changli Gao wrote:
>On Thu, Jul 2, 2009 at 5:13 PM, Amerigo Wang<xiyou.wangcong@...il.com> wrote:
>> On Thu, Jul 02, 2009 at 03:36:41PM +0800, Changli Gao wrote:
>>
>> Why? Why do you need this feature?
>>
>Are you familiar with splice() and tee()? They both use pipes as kernel buffers.

You are not answering the question, obviously.

And you snipped too much, how can you return that fd? Using the return value?
Ah! This will probably break the user-space program...
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